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Income Taxes - Additional Information (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Income Tax [Line Items] |  |  |  |  |
Effective income tax rate (as percent) | 81.50% | 28.60% | 407.40% | 34.50% |
U.S. Federal statutory rate (as percent) | 21.00% |  | 21.00% |  |
Tax benefit recognized due to valuation allowances and French business tax | $ 0 |  | $ 0 |  |
Gross unrecognized tax benefits | $ 68,200,000 |  | $ 68,200,000 |  | $ 69,500,000
Earliest Tax Year |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Income tax examination year under examination |  |  | 2013 |  |
Latest Tax Year |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Income tax examination year under examination |  |  | 2020 |  |

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